Infineon management still has the old Siemens mentally instilled in them. Basically every one in their upper management is detached from reality. They will re-organise the entire company blindly, just for the sake of having done something, rather than looking for the specific problems and solving them individually. Because looking for problems means there are specific problems. And there being specific problems means, management has done something wrong. Management can't be wrong, never.
That's how Siemens lost their mobile phone branch:
1. See something is wrong (other companies have a few features more in their phones),
2. Do nothing about that
3. Reorganize (cut personal, buy a few random companies, spin-off a few departments, do massive outsourcing and create marketing buzz)
4. Loose money in the process - surprise! Step 4 wasn't for free and some of the employees were needed.
5. Repeat from 1.) until bankruptcy
(Or a couple of coup d'états resulting in a competent but even shittier CEO)
And it's the same thing with Infineon to a lesser degree. They were spun-off as part of a reorganization that was only necessary in the first place because mobile phones and other branches of the company were struggling and money was needed. Nothing has changed since then.